U.S. patent application number 11/104526 was filed with the patent office on 2005-08-11 for cleaner for optical information processing device, and optical information processing device.
This patent application is currently assigned to FUJITSU LIMITED. Invention is credited to Fujimaki, Tohru, Matsui, Kiyoto.
Application Number | 20050174693 11/104526 |
Document ID | / |
Family ID | 34825496 |
Filed Date | 2005-08-11 |
United States Patent
Application |
20050174693 |
Kind Code |
A1 |
Matsui, Kiyoto ; et
al. |
August 11, 2005 |
Cleaner for optical information processing device, and optical
information processing device
Abstract
A cleaner (C.sub.1) for an magneto-optical disk device includes
a cartridge (4), a disk (1), an adhesive sheet (2) stuck to the
disk (1), a clamping disk (3), and a shutter (5). The clamping disk
(3) is stored rotatable in the cartridge (4), and the disk (1) is
fixed to the cartridge (4) at a position apart from the clamping
disk (3). By this means, it becomes possible to safely clean an
optical head (17). Also, dust can be prevented from scattering to
the magneto-optical disk device (P.sub.1).
Inventors: |
Matsui, Kiyoto; (Kawasaki,
JP) ; Fujimaki, Tohru; (Kawasaki, JP) |
Correspondence
Address: |
STAAS & HALSEY LLP
SUITE 700
1201 NEW YORK AVENUE, N.W.
WASHINGTON
DC
20005
US
|
Assignee: |
FUJITSU LIMITED
Kawasaki
JP
|
Family ID: |
34825496 |
Appl. No.: |
11/104526 |
Filed: |
April 13, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
11104526 |
Apr 13, 2005 |
|
|
|
PCT/JP03/00441 |
Jan 20, 2003 |
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Current U.S.
Class: |
360/137 ;
15/104.002; 15/210.1; 360/128; G9B/11.048; G9B/23.047;
G9B/7.106 |
Current CPC
Class: |
B08B 7/0028 20130101;
G11B 7/121 20130101; G01N 2021/152 20130101; G11B 11/10584
20130101; G11B 23/0327 20130101 |
Class at
Publication: |
360/137 ;
015/210.1; 015/104.002; 360/128 |
International
Class: |
B08B 001/00 |
Claims
1. A cleaner for an optical information processing device,
comprising a cleaning contact member coming into contact with an
optical head of the optical information processing device, wherein
the contact member comprises an adhesive member including an
adhesive surface.
2. The cleaner for an optical information processing device
according to claim 1, wherein the adhesive member maintains a state
which prevents it from moving in a direction intersecting with the
contact direction when it comes into contact with the optical
head.
3. The cleaner for an optical information processing device
according to claim 1, wherein at least the surface portion of the
adhesive member has rubbery elasticity.
4. The cleaner for an optical information processing device
according to claim 1, wherein at least the surface portion of the
adhesive member is constructed of a gel.
5. The cleaner for an optical information processing device
according to claim 1, further comprising a cartridge formed
loadable into a loading section for optical recording media of an
optical information processing device, wherein the cartridge
contains an adhesive member and has a window formed which enables
contact between the adhesive member and the optical head.
6. The cleaner for an optical information processing device
according to claim 5, further comprising a shutter which makes the
window freely open/close.
7. The cleaner for an optical information processing device
according to claim 6, wherein the adhesive member is installed
fixed to the position facing the window inside the cartridge.
8. The cleaner for an optical information processing device
according to claim 7, wherein a disk for clamping is contained
rotatable inside the cartridge, and the adhesive member is
positioned away from the disk.
9. The cleaner for an optical information processing device
according to claim 1, further comprising a first disk for clamping
and a second disk which is supported by the first disk and has the
adhesive member built in, wherein the first and second disks are
set rotatable relative to each other in their track direction.
10. The cleaner for an optical information processing device
according to claim 9, wherein a hole for inserting a spindle is
formed on the center of the first disk.
11. The cleaner for an optical information processing device
according to claim 9, wherein a hole is formed on the center of the
second disk, and the whole or a part of the first disk fits in the
hole in a relatively rotatable manner.
12. The cleaner for an optical information processing device
according to claim 1, further comprising a support means which is
built in the optical information processing device and supports the
adhesive member, wherein at least one of the optical head and the
support means is movable in the focusing direction and a direction
intersecting with the focusing direction, whereby the optical head
and the adhesive member are brought into contact with each other
and brought away from each other.
13. An optical information processing device provided with an
optical head and a cleaning contact member coming into contact with
the optical head, wherein the contact member comprises an adhesive
member having an adhesive surface.
Description
TECHNICAL FIELD
[0001] The present invention relates to a cleaner for cleaning an
optical head of an optical information processing device and an
optical information processing device.
[0002] The "optical information processing device" in this
specification refers to an information processing device which can
record and/or playback data employing an optical means. Hence, it
is a broad concept which includes a type of information processing
device which can perform data rewriting to an optical recording
medium by the magneto-optical recording method or the phase change
method in additional to an optical processing device of a narrow
definition dedicated to reading data from an optical disk.
BACKGROUND ART
[0003] In optical disk devices represented by CD players and DVD
players, reading/writing of information to an optical disk is
performed using an optical head. The optical head is equipped with
an objective lens which forms a laser spot on the recording plane
of an optical disk by condensing laser light emanating from a laser
light source. Dust may adhere to the objective lens, which if it
becomes dirty, the reading/writing performance of the optical head
becomes degraded. Hence, it is desirable that the optical head be
cleaned periodically, and various kinds of cleaners have been
proposed in the past as stated hereafter.
[0004] Described in JP-A-2000-251296 is a cleaner for optical disk
devices. The cleaner has a brush installed on a disk. By inserting
the cleaner to an optical disk device and placing the brush in
contact with the optical head of the optical disk device in a state
where the disk is rotated at high speed, cleaning of the optical
disk is performed.
[0005] Described in JP-A-H4-221432, H5-120713, H6-124473, and
H8-55356 are cleaners which use a cloth, a wet-type tip, an
elastically-deformable porous body, or a spongy elastic member as a
contact member for cleaning an optical head. In the cleaners
described in these laid-open patent publications as well, in the
same way as for the cleaner described in JP2000-251296, cleaning
the optical head is performed by putting the contact member in
contact with the optical head while rotating it at high speed.
[0006] However, in these prior-art techniques, because the contact
member is brought into contact with the optical head while rotating
it at high speed, there is the possibility that the objective lens
of the optical head may be scratched. Also, dust attached to the
optical head will be scattered into the optical information
processing device by the high-speed rotation of the contact member.
Hence, there is also the problem that dust remains and accumulates
inside the optical disk device.
DISCLOSURE OF THE INVENTION
[0007] The objective of the present invention is to provide a
cleaner for an optical information processing device and an optical
information processing device which can solve or reduce the
problem.
[0008] The cleaner for optical information processing devices
provided by the first aspect of the present invention is a cleaner
for optical processing devices equipped with a contact member for
cleaning which can come into contact with the optical head of an
optical information processing device and is characterized by the
fact that an adhesive member having adhesive on its surface is used
as the contact member.
[0009] Preferably, the adhesive member should be constructed to
maintain a state wherein movement intersecting with its contact
direction is prevented when it comes into contact with the optical
head.
[0010] Preferably, at least the surface portion of the adhesive
member is provided with rubbery elasticity.
[0011] Preferably, at least the surface portion of the adhesive
member is constructed of a gel.
[0012] Preferably, as the optical recording medium of an optical
information processing device, the cleaner for the optical
information processing devices of the present invention is equipped
with a cartridge which is loadable to the loading section, wherein
the adhesive member is contained within the cartridge, and a window
is formed which enables contact between the adhesive member and the
optical head.
[0013] Preferably, the cleaner for optical information processing
devices of the present invention is equipped with a shutter which
enables the window to open/close freely.
[0014] Preferably, the adhesive member is installed on the position
inside the cartridge facing the window.
[0015] Preferably, a disk for clamping is contained to be rotatable
inside the cartridge, and the adhesive member should be positioned
in a place apart from the disk.
[0016] Preferably, it is equipped with a first disk for clamping,
and a second disk supported by the first disk, and is provided with
a built-in adhesive member, wherein the first and second disks is
allowed to rotate relative to each other in the track
direction.
[0017] Preferably, a hole for spindle insertion is formed on the
center of the first disk.
[0018] Preferably, a hole is formed on the center of the second
disk, and the whole or a part of the first disk is fit into the
hole in a relatively rotatable manner.
[0019] Preferably, a support means is built into the optical
information processing device and supports the adhesive member. At
least one of the optical head and the support means is movable in
the focusing direction and a direction intersecting with the
focusing direction, whereby the optical head and the adhesive
member are brought into contact with each other and brought away
from each other.
[0020] An optical information processing device according to a
second aspect of the present invention includes an optical head and
a cleaning contact member that can be brought into contact with the
optical head. The contact member comprises an adhesive member
having an adhesive surface.
[0021] The characteristics and advantages of the present invention
will become clear from the explanations of the embodiments of the
present invention stated below.
BRIEF DESCRIPTION OF DRAWINGS
[0022] FIG. 1 is a cross-sectional view of an example of the
cleaner for optical information processing devices related to the
present invention.
[0023] FIG. 2 is an exploded oblique view of the cleaner for
optical information processing devices shown in FIG. 1.
[0024] FIG. 3 is an explanatory drawing of the state of using the
cleaner for optical information processing devices shown in FIG.
1.
[0025] FIG. 4 is a cross-sectional view of another example of the
cleaner for optical information processing devices related to the
present invention.
[0026] FIG. 5 is a bottom view of the cleaner for optical
information processing devices shown in FIG. 4.
[0027] FIG. 6 is a cross-sectional view of another example of the
cleaner for optical information processing devices related to the
present invention.
[0028] FIG. 7 is an outline oblique view of another example of the
cleaner for optical information processing devices related to the
present invention.
BEST MODE FOR CARRYING OUT THE INVENTION
[0029] Preferred embodiment forms of the present invention are
explained hereafter with reference to the drawings.
[0030] FIGS. 1 and 2 show an example of the cleaner for optical
information processing devices to which the present invention is
applied. A cleaner C.sub.1 is used for cleaning magneto-optical
disk devices is constructed to be equipped with a cartridge 4, a
disk 1 contained in the cartridge 4, an adhesive sheet 2, a
clamping disk 3, and a shutter 5. The cartridge 4 is formed by
joining a first member 40 and a second member 41 so as to form a
apace inside. A window 40a is formed on the first member 40.
Attached to the center inside the cartridge 4 is the clamping disk
3 which is rotated by a spindle 20 of a magneto-optical disk device
P.sub.1 shown in FIG. 3. Formed on the center of the second member
41 is a circular opening 41a which exposes one side of the clamping
disk 3 to allow the spindle of the magneto-optical disk device
P.sub.1 to make contact. The shutter 5 is for opening/closing the
window 40a and ordinarily keeps the window 40a closed with a force
of a spring (not shown). On the other hand, when the cleaner
C.sub.1 is loaded into the magneto-optical disk device P.sub.1,
this shutter 5 moves by a shutter opening mechanism of the
magneto-optical disk P.sub.1 and opens the window 40a.
[0031] The adhesive sheet 2 is pasted on the position facing the
window 40a on one side of the disk 1. As the adhesive sheet 2, use
is made of one made of a material equipped with enough adhesiveness
to effectively attach dust on its surface. However, materials
having excessive adhesiveness are not appropriate because the
adhesive component would stick to an optical head 17 of the
magneto-optical disk device P.sub.1. The entire adhesive sheet 2
has rubbery elasticity, and is made of silicone rubber as its
concrete material. As material equipped with such requirements as
the above and which are in wide circulation, there are KE3495
manufactured by Shin'etsu Chemical Industry Corp. and SRT-33-S
manufactured by Sakase Chemical Industry Corp. for example.
Specifically, the adhesive sheet 2 may be given construction
wherein it is entirely made of silicone rubber and pasted to the
disk 1 with an adhesive, etc. The present invention also allows
construction which employs a sheet wherein only the surface portion
is made of silicone rubber, in which an adhesive layer is formed on
the other face, and they are accumulated with a base substance.
[0032] The disk 1 has an opening la on the center, and its shape
and size in the state where the clamping disk 3 is combined with it
are similar to those of general cartridge-type magneto-optical
disks. This disk 1 is fixed to the second member 41 by the opening
la installed on the disk 1 and a pin 41b installed on the second
member 41 of the cartridge, fitting with one another. On the other
hand, the clamping disk 3 is rotatably supported by the first
member 40 and the second member 41 of the cartridge 4. In the
example shown in FIG. 1, a pin 40b installed on the first member 40
is inserted into an opening 3a installed on the clamping disk 3,
and the clamping disk 3 is supported to be freely rotatable inside
the disk 1 by being sandwiched by the first member 40 and the
second member 41. According to such construction, when the cleaner
C.sub.1 is loaded into the magneto-optical disk device Pa, only the
clamping disk 3 is rotated by the spindle of the magneto-optical
disk device P.sub.1, and the disk 1 is not rotated.
[0033] An explanation is provided next of the construction of the
magneto-optical disk device P.sub.1 wherein the cleaner C.sub.1 is
used, with reference to FIG. 3.
[0034] The magneto-optical disk device P.sub.1 is equipped with an
optical unit 13, a carriage 15, and a spindle 20. The optical unit
13 is equipped with an light emission system comprising a laser
light source, a prism to form light, etc., and a light reception
system comprising a beam splitter to split light returned from an
optical disk, a detector to sense returned light, a lens to
condense light onto the detector, etc. (none of them shown). A
laser beam 14 emitted from the optical unit 13 is changed of its
direction toward the disk 1 by an upward-redirecting mirror 16 of
the carriage 15. The laser beam 14 passes through an objective lens
17a installed on an optical head 17 and is radiated onto an
magneto-optical disk (not shown) loaded in a loading section
L.sub.1. (Shown in FIG. 3 is a state in which the cleaner C.sub.1
is loaded, and the magneto-optical disk is not shown.) The carriage
15 is equipped with a bearing 19, which is made to be movable in
the radial direction of the disk 1. The optical head 17 is
supported by a suspension (not shown) inside an actuator 18. By the
actuator 18 controlling the position of the optical head 17,
focusing control is performed. Specifically, immediately after an
magneto-optical disk is loaded into the magneto-optical disk device
P.sub.1 or when data read/write is performed, the optical head 17
is allowed to approach the magneto-optical disk by the actuator 18,
and if focusing is precisely done, the actuator 18 is controlled so
as to maintain that state. If focusing is not done properly, the
control is executed again, and the control is repeated for a set
number of times until focusing becomes proper. Also, the optical
head 17 is equipped with a coil for forming magnetism (not shown)
other than the objective lens 17a.
[0035] Next, the cleaning action of the optical head 17 by the
cleaner C.sub.1 is explained.
[0036] First, when the cleaner C.sub.1 is loaded into the loading
section L.sub.1 of the magneto-optical disk device P.sub.1, the
clamping disk 3 is held by the spindle 20. Also, the window 40a
opens by the shutter 5 being moved by the opening mechanism (not
shown) of the magneto-optical disk device P.sub.1. Next, focusing
control is started, wherein the objective lens 17a is allowed to
approach the cleaner C.sub.1 by the actuator 18. At this time even
when the clamping disk 3 of the cleaner C.sub.1 is rotated by the
rotating spindle 20, the disk 1 is not rotated in this
construction. Therefore, the objective lens 17 is allowed to
approach the adhesive sheet 2 in a still state, and the adhesive
sheet 2 and the objective lens 17a come into contact with each
other. At this time, the adhesive sheet 2 is still and does not
physically wipe the lens 17a. However, because the adhesive sheet 2
has appropriate adhesiveness, dust on the lens 17a adheres to the
adhesive sheet 2. By this means, the objective lens 17a is cleaned.
On the other hand, because the adhesive sheet 2 is made of silicone
rubber, it is hard to reflect light. Hence, because the detector
cannot detect returned light, focusing control continues
afterwards. Hence, by the objective lens 17a being driven up and
down repeatedly, the adhesive sheet 2 and the objective lens 17a
come into contact with each other repeatedly, and cleaning of the
objective lens 17a. is repeated. After the process is repeated
several times, the magneto-optical disk device P.sub.1 recognizes
that an error in disk judgment has occurred and focusing control is
ended. By this means, the optical head 17 equipped with the
objective lens 17a retreats to a specified position, and cleaning
of the objective lens 17 is completed.
[0037] In this way, the adhesive sheet 2 does not rotate and only
comes into contact with the objective lens 17a in a still state.
Hence, little horizontal frictional force occurs between them.
Also, the adhesive sheet 2 made of silicone rubber has flexibility
and becomes deformed elastically to fit with the objective lens 17
during contact, there is no excessive force such as that of the
applied impact, and scratching the objective lens 17 and damaging
other parts of the optical head 17 can be prevented. Furthermore,
because the adhesive sheet 2 performs the function of retaining
dust adhered to its surface, dust adhering to the adhesive sheet 2
does not adhere to the objective lens 17a again. Because dust is
not wiped away at high speed as in cleaning with a brush, dust is
not scattered into the magneto-optical disk device P.sub.1. Hence,
dust can be prevented from remaining and accumulating inside the
magneto-optical disk device P.sub.1.
[0038] FIG. 4 and FIG. 5 show another example of the present
invention. A cleaner C.sub.2 in the present embodiment, unlike the
cleaner C.sub.1, for cleaning optical disk devices for
reading/writing a medium having no cartridge, is constructed by
being equipped with a cleaner disk 51, a clamping disk 52, and a
ring-shaped adhesive sheet 53.
[0039] The adhesive sheet 53 is pasted so as to cover all tracks of
one side of the disk 51. Also, as the material of the adhesive
sheet 53, silicone rubber is adequate in the same way as in the
embodiment example stated above.
[0040] The clamping disk 52 is fit into an opening installed at the
center of the disk 51. A ring-shaped concave section 51a on the
inner circumference of the disk 51 and a ring-shaped convex section
52a on the outer circumference of the clamping disk 52 fit with
each other, by which the disk 51 and the clamping disk 52 are given
a construction wherein they can rotate relative to each other in
the track direction and do not disengage in the thickness
direction.
[0041] Actions of the cleaner C.sub.2 are explained next.
[0042] Once the cleaner C.sub.2 is loaded into a loading section of
an optical disk device, the clamping disk 52 is held by the spindle
81 of the optical disk device. An optical head 80 of the optical
disk device is allowed to approach the cleaner C.sub.2 from below
the cleaner C.sub.2 for performing focusing control. Afterwards, an
objective lens 80a installed on the optical head 80 and the
adhesive sheet 53 come into contact with each other. At this time,
the clamping disk 52 may occasionally be rotated by the spindle 81
rotating. However, the disk 51 and the clamping disk 52 are given a
construction that allows them to rotate relative to each other.
Also, the disk 51 comes into contact with the objective lens via
the adhesive sheet 53. Hence, in the case, at least while the
adhesive sheet 53 and the objective lens 80a are in contact with
each other, the disk 51 remains still, and only the clamping disk
52 rotates. Then, by dust on the objective lens 80a adhering onto
the adhesive sheet 53, the objective lens 80a is cleaned. Hence,
the same cleaning effect as in the embodiment form described above
can be obtained.
[0043] Shown in FIG. 6 is another example of cleaner used for
optical disk devices which read/write a medium having no
cartridge.
[0044] A cleaner C.sub.3 of the present embodiment form has a
similar construction to the cleaner C.sub.2, and is equipped with a
disk 61, a clamping disk 62, and a ring-shaped adhesive sheet 63.
The clamping disk 62 comprises a lower member 62a and an upper
member 62b. By a part of the lower member 62a being fit into a hole
installed on the upper member 62b through a hole installed on the
disk 61, the upper member 62a and the lower member 62b are
combined. By such a construction, the disk 61 and the clamping disk
62 are given a construction wherein they can rotate relative to
each other and do not disengage from each other in the thickness
direction. According to such construction, the same effect as when
cleaning with the cleaner C.sub.2 can be obtained.
[0045] Shown in FIG. 7 is an example of the magneto-optical disk
device related to the present invention.
[0046] A magneto-optical disk device P.sub.2 is equipped with an
optical unit (not shown), a carriage 15, an optical head 17, and a
spindle 20 in the same way as in the magneto-optical disk device
P.sub.1. Furthermore, in addition to these, it is provided with a
cleaner 70. The cleaner 70 is equipped with an arm 71, an
adhesive-sheet 72, and a driving mechanism 73.
[0047] The adhesive sheet 72 is made of silicone rubber used in the
embodiment example described above, which is pasted on the bottom
face of the arm 71. The arm 71 is capable of rotating and
ascending/descending by the driving mechanism 73.
[0048] The procedure of cleaning of the optical head 17 by the
cleaner 70 is explained below.
[0049] When a magneto-optical disk D is loaded in a loading section
L.sub.2 of the magneto-optical disk device P.sub.2, the arm 71 is
retreated into a position which does not interfere with the
magneto-optical disk D. In FIG. 7 the cleaner mechanism 70 in the
retreated position is shown by a solid line. Cleaning is started
after the magneto-optical disk D enters a state in which it is not
loaded into the magneto-optical disk device P.sub.2,. First, the
arm 71 is rotated by the driving mechanism 73 from the retreated
position to a position immediately above the optical head 17. Next,
the arm 71 is lowered by the driving mechanism 73 in the direction
of the optical head 17. By so doing, the adhesive sheet 72 and
objective lens 17a of the optical head 17 come into contact with
each other. Then, by dust on the objective lens 17a adhering to an
adhesive sheet 2, the objective lens 17a is cleaned. Subsequently,
after the arm 71 is lifted up by the driving mechanism 73 in the
direction of moving away from the optical head 17, it is rotated to
the retreated position.
[0050] According to such construction, a user can clean the optical
head 17 without performing a work for loading the cleaner. Also,
because dust is attached to the adhesive sheet 72 and does not fly
scattered into the magneto-optical disk device P.sub.2, dust can be
prevented from accumulating inside the magneto-optical disk device
P.sub.2. Note that it may be given a construction in which the
adhesive sheet 72 and the objective lens 17a are put in contact
with each other without lifting/lowering the arm 71 but by
lifting/lowering the optical head 17.
[0051] Although silicone rubber is used as the raw material for the
adhesive sheet in the embodiment, the present invention is not
limited to this. In the present invention, the adhesive sheet can
be constructed of a material which has rubbery elasticity other
than silicone rubber.
[0052] In the present invention, a gel (e.g., trade mark Alpha Gel
manufactured by Geltech Corp.) having silicone as the main raw
material may be used as the raw material of the adhesive sheet. It
is possible to equip this gel with enough adhesiveness to adhere
dust onto the objective lens 17a in the same way as silicone rubber
used in the embodiment. Also, gels are flexible and deformable by
external forces. Hence, even when this gel is put in contact with
the objective lens 17a, it can be fit flexibly with the objective
lens 17a. Because of this, having elasticity is not especially
necessary in using a gel.
* * * * *